Add 12/72 and 70/18
1st number: 12/72, 2nd number: 3 16/18
12/72 + 70/18 is 73/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 18 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 72 × 1 = 72,
12/72 = 12 × 1/72 × 1 = 12/72 - Likewise, for the 2nd fraction, since 18 × 4 = 72,
70/18 = 70 × 4/18 × 4 = 280/72 - Add the two like fractions:
12/72 + 280/72 = 12 + 280/72 = 292/72 - 292/72 simplified gives 73/18
- So, 12/72 + 70/18 = 73/18
In mixed form: 41/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/72+70/18 12/72+70/36 36/72+70/18 12/72+70/54 60/72+70/18 12/72+70/90 84/72+70/18